A semiconductor device includes first to fourth terminals, a switch circuit, and an integrating circuit. The integrating circuit includes an amplifier circuit having a (−) terminal, a first (+) terminal, and a second (+) terminal. The integrating circuit is configured to integrate an input signal of the (−) terminal using an average voltage of a voltage of the first (+) terminal and a voltage of the second (+) terminal as a reference voltage. The switch circuit is configured to electrically connect the (−) terminal to the second terminal, the first (+) terminal to the first terminal, the second (+) terminal to the third terminal the (−) terminal to the third terminal, the first (+) terminal to the second terminal, and the second (+) terminal to the fourth terminal. The present semiconductor device is used as a semiconductor device sensing a current flowing through a pixel in a display panel.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A semiconductor device comprising: a switch circuit comprising a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, and a power supply line; and an amplifier circuit comprising an output terminal, an inverting input terminal, a first non-inverting input terminal, and a second non-inverting input terminal, wherein a first electrode of the first switch is electrically connected to each of a first electrode of the fourth switch, a first electrode of the fifth switch, and the first non-inverting input terminal, wherein a first electrode of the second switch is electrically connected to each of a first electrode of the sixth switch and the inverting input terminal, wherein a first electrode of the third switch is electrically connected to each of a second electrode of the fourth switch, a first electrode of the seventh switch, and the second non-inverting input terminal, and wherein the power supply line is electrically connected to each of a second electrode of the fifth switch, a second electrode of the sixth switch, and a second electrode of the seventh switch.
2. The semiconductor device according to claim 1 , wherein a second electrode of the first switch, a second electrode of the second switch, and a second electrode of the third switch are electrically connected to a source driver circuit of a display device.
3. The semiconductor device according to claim 2 , wherein the display device includes an electroluminescent element.
4. The semiconductor device according to claim 1 , wherein each of the first switch, the second switch, the third switch, the fourth switch, the fifth switch, the sixth switch, and the seventh switch is a transistor.
5. The semiconductor device according to claim 1 , further comprising an eighth switch: wherein a first electrode and a second electrode of the eighth switch are electrically connected to the inverting input terminal and the output terminal, respectively.
6. A semiconductor device comprising: a switch circuit comprising a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, and a power supply line; an amplifier circuit comprising an output terminal, an inverting input terminal, a first non-inverting input terminal, and a second non-inverting input terminal; and a capacitor comprising a first wiring electrically connecting to the inverting input terminal and a second wiring electrically connecting to the output terminal, wherein a first electrode of the first switch is electrically connected to each of a first electrode of the fourth switch, a first electrode of the fifth switch, and the first non-inverting input terminal, wherein a first electrode of the second switch is electrically connected to a first electrode of the sixth switch and the inverting input terminal, wherein a first electrode of the third switch is electrically connected to each of a second electrode of the fourth switch, a first electrode of the seventh switch, and the second non-inverting input terminal, and wherein the power supply line is electrically connected to each of a second electrode of the fifth switch, a second electrode of the sixth switch, and a second electrode of the seventh switch.
7. The semiconductor device according to claim 6 , wherein a second electrode of the first switch, a second electrode of the second switch, and a second electrode of the third switch are electrically connected to a source driver circuit of a display device.
8. The semiconductor device according to claim 7 , wherein the display device includes an electroluminescent element.
9. The semiconductor device according to claim 6 , wherein each of the first switch, the second switch, the third switch, the fourth switch, the fifth switch, the sixth switch, and the seventh switch is a transistor.
10. The semiconductor device according to claim 6 , further comprising an eighth switch: wherein a first electrode and a second electrode of the eighth switch are electrically connected to the inverting input terminal and the output terminal, respectively.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
March 26, 2018
July 14, 2020
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